//
//  VisitorLoginView.swift
//  Weibo
//
//  Created by 李洋 on 15/12/13.
//  Copyright © 2015年 Leon. All rights reserved.
//

import UIKit

@objc protocol VisitorLoginViewDelegate: NSObjectProtocol {
    //声明协议方法
    optional func userWillLogin()
    func userWillRegister()
}

class VisitorLoginView: UIView {
    //声明代理属性
    weak var visitorViewDelegate:VisitorLoginViewDelegate?
    
    //对外提供设置访问视图的方法
    func setupInfo(TipText:String,imageName:String?){
        tipLabel.text = TipText
        if let name = imageName{
            circleView.image = UIImage(named: name)
            largeIcon.hidden = true
            bringSubviewToFront(circleView)
        } else {
            startAnimation()
        }
    }
    
    //开始动画
    private func startAnimation() {
        let anim = CABasicAnimation(keyPath: "transform.rotation")
        anim.repeatCount = MAXFLOAT
        anim.duration = 20.0
        anim.toValue = 2 * M_PI
        //当动画完毕或者页面失去活跃状态不移除动画
        anim.removedOnCompletion = false
        
        circleView.layer.addAnimation(anim, forKey: nil)
        
    }

    override init(frame: CGRect) {
        //调用super.init
        super.init(frame: frame)
        setupUI()
    }
    
    required init?(coder aDecoder: NSCoder) {
        fatalError("init(coder:) has not been implemented")
    }
    
    //设置所有子视图
    private func setupUI() {
        addSubview(circleView)
        addSubview(backView)
        addSubview(largeIcon)

        addSubview(tipLabel)
        addSubview(registerBtn)
        addSubview(loginBtn)
        
        //添加约束
        for subView in subviews {
            subView.translatesAutoresizingMaskIntoConstraints = false
        }
        addConstraint(NSLayoutConstraint(item: largeIcon, attribute: .CenterX, relatedBy: .Equal, toItem: self, attribute: .CenterX, multiplier: 1, constant: 0))
        
        addConstraint(NSLayoutConstraint(item: largeIcon, attribute: .CenterY, relatedBy: .Equal, toItem: self, attribute: .CenterY, multiplier: 1, constant: -60))
        
        //添加圆圈的约束
        addConstraint(NSLayoutConstraint(item: circleView, attribute: .CenterX, relatedBy: .Equal, toItem: largeIcon, attribute: .CenterX, multiplier: 1, constant: 0))
        
        addConstraint(NSLayoutConstraint(item: circleView, attribute: .CenterY, relatedBy: .Equal, toItem: largeIcon, attribute: .CenterY, multiplier: 1, constant: 0))
        
        
        addConstraint(NSLayoutConstraint(item: tipLabel, attribute: .CenterX, relatedBy: .Equal, toItem: circleView, attribute: .CenterX, multiplier: 1, constant: 0))
        addConstraint(NSLayoutConstraint(item: tipLabel, attribute: .Top, relatedBy: .Equal, toItem: circleView, attribute: .Bottom, multiplier: 1, constant: 16))
        //If your equation does not have a second view and attribute, use nil and NSLayoutAttributeNotAnAttribute.
        addConstraint(NSLayoutConstraint(item: tipLabel, attribute: .Width, relatedBy: .Equal, toItem: nil, attribute: .NotAnAttribute, multiplier: 1, constant: 230))
        addConstraint(NSLayoutConstraint(item: tipLabel, attribute: .Height, relatedBy: .Equal, toItem: nil, attribute: .NotAnAttribute, multiplier: 1, constant: 40))
        
        //按钮的约束
        
        addConstraint(NSLayoutConstraint(item: loginBtn, attribute: .Left, relatedBy: .Equal, toItem: tipLabel, attribute: .Left, multiplier: 1, constant: 0))
        addConstraint(NSLayoutConstraint(item: loginBtn, attribute: .Top, relatedBy: .Equal, toItem: tipLabel, attribute: .Bottom, multiplier: 1, constant: 20))
        //If your equation does not have a second view and attribute, use nil and NSLayoutAttributeNotAnAttribute.
        addConstraint(NSLayoutConstraint(item: loginBtn, attribute: .Width, relatedBy: .Equal, toItem: nil, attribute: .NotAnAttribute, multiplier: 1, constant: 100))
        addConstraint(NSLayoutConstraint(item: loginBtn, attribute: .Height, relatedBy: .Equal, toItem: nil, attribute: .NotAnAttribute, multiplier: 1, constant: 35))
        
        
        addConstraint(NSLayoutConstraint(item: registerBtn, attribute: .Right, relatedBy: .Equal, toItem: tipLabel, attribute: .Right, multiplier: 1, constant: 0))
        addConstraint(NSLayoutConstraint(item: registerBtn, attribute: .Top, relatedBy: .Equal, toItem: tipLabel, attribute: .Bottom, multiplier: 1, constant: 20))
        //If your equation does not have a second view and attribute, use nil and NSLayoutAttributeNotAnAttribute.
        addConstraint(NSLayoutConstraint(item: registerBtn, attribute: .Width, relatedBy: .Equal, toItem: nil, attribute: .NotAnAttribute, multiplier: 1, constant: 100))
        addConstraint(NSLayoutConstraint(item: registerBtn, attribute: .Height, relatedBy: .Equal, toItem: nil, attribute: .NotAnAttribute, multiplier: 1, constant: 35))
        
        addConstraints(NSLayoutConstraint.constraintsWithVisualFormat("H:|-0-[backView]-0-|", options: [], metrics: nil, views: ["backView": backView]))
        
        addConstraints(NSLayoutConstraint.constraintsWithVisualFormat("V:|-0-[backView]-(-35)-[regBtn]", options: [], metrics: nil, views: ["backView": backView,"regBtn":registerBtn]))
        
        //设置视图的背景颜色
        backgroundColor = UIColor(white: 0.93, alpha: 1)
        
        //添加按钮点击事件
        loginBtn.addTarget(self, action: "loginBtnClick", forControlEvents: .TouchUpInside)
        registerBtn.addTarget(self, action: "registerBtnClick", forControlEvents: .TouchUpInside)
    }
    
    @objc private func loginBtnClick(){
        //判断代理是否为空 是否响应方法
        visitorViewDelegate?.userWillLogin?()
        
    }
    
    @objc private func registerBtnClick(){
        
        visitorViewDelegate?.userWillRegister()
        
    }
    
    //懒加载所有子视图
    private lazy var backView: UIImageView = UIImageView(image: UIImage(named: "visitordiscover_feed_mask_smallicon"))
    private lazy var largeIcon: UIImageView = UIImageView(image: UIImage(named: "visitordiscover_feed_image_house"))
    private lazy var circleView: UIImageView = UIImageView(image: UIImage(named: "visitordiscover_feed_image_smallicon"))
    private lazy var tipLabel: UILabel = UILabel(title: "关注一些人，回这里看看有什么惊喜,关注一些人，回这里看看有什么惊喜", color: UIColor.darkGrayColor(), fontSize: 14)
    
    private lazy var registerBtn: UIButton = UIButton(title: "注册", backImageName: "common_button_white_disable", fontSize: 15, color: themeColor)
    
    private lazy var loginBtn: UIButton = UIButton(title: "登陆", backImageName: "common_button_white_disable", fontSize: 15, color: UIColor.darkGrayColor())

}
